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amba
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drwxr-xr-x
2021-04-21 07:33
bcma
[ DIR ]
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byteorder
[ DIR ]
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can
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clk
[ DIR ]
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decompress
[ DIR ]
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dma
[ DIR ]
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fpga
[ DIR ]
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fsl
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gpio
[ DIR ]
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hsi
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i2c
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iio
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input
[ DIR ]
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irqchip
[ DIR ]
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isdn
[ DIR ]
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lockd
[ DIR ]
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mfd
[ DIR ]
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mlx4
[ DIR ]
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mlx5
[ DIR ]
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mmc
[ DIR ]
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mtd
[ DIR ]
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netfilter
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netfilter_arp
[ DIR ]
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netfilter_bridge
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netfilter_ipv4
[ DIR ]
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netfilter_ipv6
[ DIR ]
drwxr-xr-x
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perf
[ DIR ]
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phy
[ DIR ]
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pinctrl
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platform_data
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power
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qed
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raid
[ DIR ]
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regulator
[ DIR ]
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reset
[ DIR ]
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rtc
[ DIR ]
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sched
[ DIR ]
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soc
[ DIR ]
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spi
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ssb
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sunrpc
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ulpi
[ DIR ]
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unaligned
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usb
[ DIR ]
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uwb
[ DIR ]
drwxr-xr-x
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wimax
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drwxr-xr-x
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8250_pci.h
999
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2016-01-11 00:01
a.out.h
315
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acct.h
2.51
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acpi.h
28.55
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2021-04-16 11:57
acpi_dma.h
3.22
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2016-01-11 00:01
acpi_pmtmr.h
635
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2016-01-11 00:01
adb.h
1.75
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adfs_fs.h
535
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aer.h
1.66
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agp_backend.h
3.45
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agpgart.h
3.82
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ahci_platform.h
1.49
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aio.h
879
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alarmtimer.h
1.64
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altera_jtaguart.h
340
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altera_uart.h
358
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amd-iommu.h
5.93
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amifd.h
1.95
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amifdreg.h
2.61
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amigaffs.h
2.86
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anon_inodes.h
455
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apm-emulation.h
1.54
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apm_bios.h
2.68
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apple_bl.h
459
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arm-cci.h
2.01
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arm-smccc.h
9.44
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2021-04-16 11:57
asn1.h
1.99
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2016-01-11 00:01
asn1_ber_bytecode.h
2.72
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asn1_decoder.h
675
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assoc_array.h
3.07
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assoc_array_priv.h
5.49
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2016-01-11 00:01
async.h
1.65
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2016-01-11 00:01
async_tx.h
6.76
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2016-01-11 00:01
ata.h
29.47
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2021-04-16 11:57
ata_platform.h
690
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2016-01-11 00:01
atalk.h
4.32
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2021-04-16 11:57
ath9k_platform.h
1.36
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2016-01-11 00:01
atm.h
248
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2016-01-11 00:01
atm_suni.h
253
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2016-01-11 00:01
atm_tcp.h
472
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2016-01-11 00:01
atmdev.h
9.52
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2016-01-11 00:01
atmel-mci.h
1.31
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2016-01-11 00:01
atmel-ssc.h
9.68
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2016-01-11 00:01
atmel_pdc.h
1.47
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2016-01-11 00:01
atmel_serial.h
7.66
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2016-01-11 00:01
atmel_tc.h
11.33
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2016-01-11 00:01
atomic.h
14.97
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2021-04-16 11:57
attribute_container.h
2.47
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2016-01-11 00:01
audit.h
17.56
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2021-04-16 11:57
auto_dev-ioctl.h
5.06
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2016-01-11 00:01
auto_fs.h
657
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2016-01-11 00:01
auxvec.h
265
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average.h
1.48
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2016-01-11 00:01
b1pcmcia.h
666
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backing-dev-defs.h
7.81
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2021-04-16 11:57
backing-dev.h
14.39
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backlight.h
5.14
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2016-01-11 00:01
balloon_compaction.h
6.91
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2016-01-11 00:01
basic_mmio_gpio.h
2.23
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bcd.h
520
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2016-01-11 00:01
bch.h
2.6
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2016-01-11 00:01
bcm47xx_nvram.h
1.19
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bcm47xx_wdt.h
617
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bfin_mac.h
559
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binfmts.h
3.96
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2016-01-11 00:01
bio.h
21.38
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bit_spinlock.h
2.27
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2016-01-11 00:01
bitmap.h
13.04
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2021-04-16 11:57
bitops.h
5.46
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bitrev.h
2
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bits.h
833
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blk-cgroup.h
21.95
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2016-01-11 00:01
blk-iopoll.h
1.13
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2016-01-11 00:01
blk-mq.h
7.56
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2021-04-16 11:57
blk_types.h
8.43
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2016-01-11 00:01
blkdev.h
50.19
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2021-04-16 11:57
blkpg.h
397
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2016-01-11 00:01
blktrace_api.h
3.4
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2021-04-16 11:57
blockgroup_lock.h
1.14
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2016-01-11 00:01
bma150.h
1.89
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2016-01-11 00:01
bootmem.h
10.61
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bottom_half.h
764
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bpf.h
7.13
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2021-04-16 11:57
brcmphy.h
8.66
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2016-01-11 00:01
bsearch.h
236
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bsg-lib.h
1.98
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bsg.h
734
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btree-128.h
2.63
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2016-01-11 00:01
btree-type.h
3.86
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2016-01-11 00:01
btree.h
6.8
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btrfs.h
106
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buffer_head.h
12.73
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2021-04-16 11:57
bug.h
3.63
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2021-04-16 11:57
c2port.h
1.59
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2016-01-11 00:01
cache.h
2.09
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2021-04-16 11:57
cacheinfo.h
3.04
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capability.h
7.68
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cb710.h
5.69
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2016-01-11 00:01
cciss_ioctl.h
1014
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2016-01-11 00:01
ccp.h
15.37
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2016-01-11 00:01
cdev.h
787
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cdrom.h
8.66
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cfag12864b.h
2.1
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2016-01-11 00:01
cgroup-defs.h
16.01
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2021-04-16 11:57
cgroup.h
20.73
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2021-04-16 11:57
cgroup_subsys.h
1.39
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2016-01-11 00:01
circ_buf.h
1.05
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2016-01-11 00:01
cleancache.h
3.86
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2016-01-11 00:01
clk-provider.h
27.54
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2021-04-16 11:57
clk.h
13.74
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2016-01-11 00:01
clkdev.h
1.32
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2016-01-11 00:01
clksrc-dbx500-prcmu.h
455
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2016-01-11 00:01
clock_cooling.h
2.06
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2016-01-11 00:01
clockchips.h
7.3
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2016-01-11 00:01
clocksource.h
7.59
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2016-01-11 00:01
cm4000_cs.h
160
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2016-01-11 00:01
cma.h
920
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2016-01-11 00:01
cmdline-parser.h
1.17
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cn_proc.h
1.85
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2016-01-11 00:01
cnt32_to_63.h
3.6
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2016-01-11 00:01
coda.h
2.16
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2021-04-16 11:57
coda_psdev.h
2.97
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2021-04-16 11:57
compaction.h
5.74
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2021-04-16 11:57
compat.h
25.59
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compiler-clang.h
525
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compiler-gcc.h
11.09
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compiler-intel.h
1.13
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2016-01-11 00:01
compiler.h
16.7
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2021-04-16 11:57
completion.h
3.47
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2016-01-11 00:01
component.h
1.14
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2016-01-11 00:01
concap.h
3.69
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2016-01-11 00:01
configfs.h
6.88
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2016-01-11 00:01
connector.h
2.43
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2016-01-11 00:01
console.h
6.08
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console_struct.h
5.13
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2016-01-11 00:01
consolemap.h
1
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container.h
668
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2016-01-11 00:01
context_tracking.h
3.15
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2016-01-11 00:01
context_tracking_state.h
1.34
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2016-01-11 00:01
cordic.h
1.75
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2016-01-11 00:01
coredump.h
744
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coresight.h
8.7
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2016-01-11 00:01
count_zeros.h
1.62
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2016-01-11 00:01
cper.h
12.57
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2016-01-11 00:01
cpu.h
10.25
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cpu_cooling.h
3.88
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2016-01-11 00:01
cpu_pm.h
2.78
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cpu_rmap.h
1.86
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cpufeature.h
1.85
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cpufreq-dt.h
569
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cpufreq.h
19.01
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cpuidle.h
8.07
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cpumask.h
24.06
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cpuset.h
6.11
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cputime.h
334
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crash_dump.h
2.82
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crc-ccitt.h
330
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crc-itu-t.h
613
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crc-t10dif.h
376
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crc16.h
622
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crc32.h
2.83
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crc32c.h
254
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crc7.h
277
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crc8.h
3.65
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cred.h
12.26
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crypto.h
62.6
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cryptohash.h
448
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2016-01-11 00:01
cs5535.h
6.28
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ctype.h
1.69
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cuda.h
462
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2016-01-11 00:01
cyclades.h
10.26
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2016-01-11 00:01
davinci_emac.h
1.12
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2016-01-11 00:01
dax.h
1.45
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2016-01-11 00:01
dca.h
2.62
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dcache.h
18.9
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dccp.h
10.69
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dcookies.h
1.25
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2016-01-11 00:01
debug_locks.h
1.48
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debugfs.h
9.86
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debugobjects.h
3.65
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2016-01-11 00:01
delay.h
1.39
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2016-01-11 00:01
delayacct.h
4
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2016-01-11 00:01
dell-led.h
133
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2016-01-11 00:01
devcoredump.h
986
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2016-01-11 00:01
devfreq-event.h
5.64
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devfreq.h
10.5
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2016-01-11 00:01
devfreq_cooling.h
2.56
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2021-04-16 11:57
device-mapper.h
16.3
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2021-04-16 11:57
device.h
47.02
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device_cgroup.h
597
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devpts_fs.h
1.1
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digsig.h
1.35
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dim.h
8.98
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dio.h
10.93
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dirent.h
177
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dlm.h
6.01
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dlm_plock.h
678
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dm-dirty-log.h
3.94
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1.91
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2.85
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3.11
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dm9000.h
1.11
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dma-attrs.h
1.87
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dma-buf.h
8.85
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dma-contiguous.h
4.45
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dma-debug.h
5.09
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dma-direction.h
299
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dma-iommu.h
2.73
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dma-mapping.h
9.4
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dma_remapping.h
1.38
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dmaengine.h
40.34
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dmapool.h
1.09
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2016-01-11 00:01
dmar.h
7.82
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dmi.h
4.01
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dnotify.h
1008
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dns_resolver.h
1.31
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dqblk_qtree.h
2.06
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dqblk_v1.h
288
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dqblk_v2.h
367
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drbd.h
10.26
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drbd_genl.h
15.8
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drbd_genl_api.h
1.73
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drbd_limits.h
7.09
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ds1286.h
1.19
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ds17287rtc.h
2.61
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ds2782_battery.h
119
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dtlk.h
3.46
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2016-01-11 00:01
dw_apb_timer.h
1.71
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dynamic_debug.h
3.91
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dynamic_queue_limits.h
3.66
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earlycpio.h
320
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ecryptfs.h
3.79
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edac.h
24.46
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edd.h
1.43
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edma.h
807
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eeprom_93cx6.h
2.94
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eeprom_93xx46.h
422
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efi-bgrt.h
427
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efi.h
37.01
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efs_vh.h
1.51
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eisa.h
2.92
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2016-01-11 00:01
elevator.h
6.94
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elf-fdpic.h
2.18
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2016-01-11 00:01
elf-randomize.h
544
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2016-01-11 00:01
elf.h
1.44
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elfcore-compat.h
1.2
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elfcore.h
2.42
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elfnote.h
3.5
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enclosure.h
4.6
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err.h
1.48
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errno.h
1.24
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errqueue.h
450
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etherdevice.h
13.77
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ethtool.h
15.11
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eventfd.h
2.05
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eventpoll.h
2.01
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evm.h
2.48
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export.h
2.73
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exportfs.h
7.78
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ext2_fs.h
928
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extcon.h
11.03
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f2fs_fs.h
16.54
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f75375s.h
541
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falloc.h
719
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fanotify.h
206
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fault-inject.h
1.84
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fb.h
28.61
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2021-04-16 11:57
fcdevice.h
988
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fcntl.h
1.23
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fd.h
451
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fddidevice.h
1.08
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fdtable.h
3.2
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fec.h
609
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2016-01-11 00:01
fence.h
12.72
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file.h
1.79
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filter.h
16.17
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fips.h
128
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firewire.h
13.36
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firmware-map.h
1.32
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firmware.h
2.01
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fixp-arith.h
4.41
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flat.h
1.58
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flex_array.h
2.43
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flex_proportions.h
2.78
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fmc-sdb.h
1.25
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fmc.h
8.34
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font.h
1.6
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freezer.h
8.65
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frontswap.h
2.69
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fs.h
101.49
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fs_enet_pd.h
3.38
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fs_pin.h
580
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fs_stack.h
772
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fs_struct.h
999
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fs_uart_pd.h
1.49
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fscache-cache.h
18.39
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fscache.h
27.87
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fsl-diu-fb.h
4.08
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fsl_devices.h
4.28
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fsl_hypervisor.h
2.76
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fsl_ifc.h
24.76
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fsldma.h
398
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fsnotify.h
7.68
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fsnotify_backend.h
16.77
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ftrace.h
29
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ftrace_irq.h
298
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2016-01-11 00:01
futex.h
2.35
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fwnode.h
630
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gameport.h
5.56
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gcd.h
154
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genalloc.h
4.84
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genetlink.h
1.35
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genhd.h
22.75
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genl_magic_func.h
11.91
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genl_magic_struct.h
7.47
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2021-04-16 11:57
getcpu.h
602
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2016-01-11 00:01
gfp.h
21.65
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glob.h
217
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goldfish.h
566
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gpio-fan.h
802
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2016-01-11 00:01
gpio-pxa.h
532
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gpio.h
5.15
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gpio_keys.h
1.66
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gpio_mouse.h
1.46
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hardirq.h
1.7
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hash.h
2.67
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hashtable.h
6.46
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hdlc.h
3.43
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hdlcdrv.h
6.28
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hdmi.h
9.27
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hid-debug.h
2.07
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hid-roccat.h
688
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2016-01-11 00:01
hid-sensor-hub.h
8.67
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hid-sensor-ids.h
6.66
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hid.h
34.79
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hiddev.h
1.88
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hidraw.h
1.49
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highmem.h
5.8
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highuid.h
3.08
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hil.h
18.42
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hil_mlc.h
5.13
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hippidevice.h
1.29
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2016-01-11 00:01
host1x.h
7.72
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hp_sdc.h
14.02
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hpet.h
2.52
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hrtimer.h
14.1
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2021-04-16 11:57
htcpld.h
578
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htirq.h
1.04
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huge_mm.h
6.97
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hugetlb.h
15.3
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hugetlb_cgroup.h
2.97
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hugetlb_inline.h
329
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hw_breakpoint.h
3.81
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hw_random.h
2.11
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hwmon-sysfs.h
1.98
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hwmon-vid.h
1.48
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hwmon.h
1.01
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hwspinlock.h
11.06
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2016-01-11 00:01
hyperv.h
42.12
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i2c-algo-bit.h
2.24
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i2c-algo-pca.h
2.85
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2021-04-16 11:57
i2c-algo-pcf.h
1.88
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i2c-dev.h
1.03
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2016-01-11 00:01
i2c-gpio.h
1.31
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2016-01-11 00:01
i2c-mux-gpio.h
1.35
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i2c-mux-pinctrl.h
1.44
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i2c-mux.h
1.64
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2016-01-11 00:01
i2c-ocores.h
757
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i2c-omap.h
1.17
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i2c-pca-platform.h
402
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i2c-pnx.h
923
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i2c-pxa.h
399
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i2c-smbus.h
1.72
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i2c-xiic.h
1.41
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i2c.h
24.57
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i7300_idle.h
1.91
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i8042.h
2.14
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i8253.h
809
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icmp.h
863
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2016-01-11 00:01
icmpv6.h
1.11
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ide.h
45.45
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idr.h
5.49
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2016-01-11 00:01
ieee80211.h
76.64
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2021-04-16 11:57
ieee802154.h
9.65
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2016-01-11 00:01
if_arp.h
1.52
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if_bridge.h
1.98
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if_eql.h
1.07
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if_ether.h
1.35
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if_fddi.h
3.44
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2016-01-11 00:01
if_frad.h
2.88
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if_link.h
495
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2016-01-11 00:01
if_ltalk.h
149
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if_macvlan.h
2.83
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2016-01-11 00:01
if_phonet.h
274
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if_pppol2tp.h
727
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if_pppox.h
3.11
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if_team.h
7.52
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if_tun.h
1011
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if_tunnel.h
370
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if_vlan.h
17.76
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igmp.h
4.24
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ihex.h
1.92
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ima.h
1.95
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in.h
2.43
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in6.h
1.85
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inet.h
2.61
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inet_diag.h
1.44
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inet_lro.h
3.58
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inetdevice.h
7.72
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init.h
9.58
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init_ohci1394_dma.h
157
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init_task.h
7.44
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initrd.h
583
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inotify.h
657
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2016-01-11 00:01
input-polldev.h
2.17
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input.h
18.49
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integrity.h
1.02
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2016-01-11 00:01
intel-iommu.h
17.05
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intel-svm.h
4.33
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2016-01-11 00:01
intel_pmic_gpio.h
372
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2016-01-11 00:01
interrupt.h
19.76
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interval_tree.h
757
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interval_tree_generic.h
6.96
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io-64-nonatomic-hi-lo.h
610
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io-64-nonatomic-lo-hi.h
610
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io-mapping.h
3.71
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io.h
5.27
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ioc3.h
3.14
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ioc4.h
5.78
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mutex-debug.h
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node.h
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nodemask.h
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nospec.h
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notifier.h
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nsproxy.h
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nvmem-consumer.h
4.11
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nvmem-provider.h
1.06
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4.19
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4.37
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1.4
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olpc-ec.h
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9.94
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once.h
1.65
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3.17
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openvswitch.h
844
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6.1
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1
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3.08
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pagevec.h
1.7
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parport.h
17.82
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parport_pc.h
6.52
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parser.h
982
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pata_arasan_cf_data.h
1.22
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patchkey.h
718
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path.h
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999
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pci-acpi.h
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pci-aspm.h
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pci-ats.h
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415
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pci-ecam.h
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pci.h
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pci_hotplug.h
6.79
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pci_ids.h
116.76
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pcieport_if.h
2.16
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pda_power.h
1.12
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pe.h
15.48
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percpu-defs.h
18.81
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percpu-refcount.h
9.92
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percpu-rwsem.h
1.47
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percpu.h
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percpu_counter.h
4.21
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percpu_ida.h
2.28
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perf_event.h
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perf_regs.h
969
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personality.h
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385
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phonet.h
1.12
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phy.h
26.59
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phy_fixed.h
1.58
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pid.h
5.83
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pid_namespace.h
2.35
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pim.h
518
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pipe_fs_i.h
5.4
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pktcdvd.h
5.87
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pl320-ipc.h
758
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platform_device.h
12.37
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plist.h
8.69
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pm-trace.h
728
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32.04
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1.68
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2.12
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4.09
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8.28
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6.18
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2.3
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poison.h
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poll.h
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posix-clock.h
5.44
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posix-timers.h
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posix_acl.h
3.58
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posix_acl_xattr.h
2.2
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power_supply.h
12.09
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powercap.h
12.58
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ppp-comp.h
3.1
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3.07
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ppp_defs.h
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pps-gpio.h
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3.56
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pr.h
527
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prandom.h
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preempt.h
8.61
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prefetch.h
1.5
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proc_fs.h
3.19
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proc_ns.h
2.18
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profile.h
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projid.h
2.18
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property.h
7.54
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proportions.h
3.19
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psci.h
1.79
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pstore.h
2.54
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pstore_ram.h
2.7
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pti.h
1.53
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ptp_classify.h
2.89
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ptp_clock_kernel.h
6.52
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ptrace.h
15.21
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pvclock_gtod.h
509
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pwm.h
8.44
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pwm_backlight.h
701
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pxa168_eth.h
689
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pxa2xx_ssp.h
9.75
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qcom_scm.h
1.25
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qnx6_fs.h
3.23
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quicklist.h
2.1
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quota.h
18.12
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quotaops.h
10.15
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radix-tree.h
17.93
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raid_class.h
2.08
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ramfs.h
723
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random.h
1.81
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range.h
612
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ras.h
352
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ratelimit.h
1.89
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rational.h
600
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rbtree.h
4.38
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rbtree_augmented.h
7.5
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rbtree_latch.h
6.58
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rcu_sync.h
2.51
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rculist.h
19.93
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rculist_bl.h
4.32
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rculist_nulls.h
4.3
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rcupdate.h
40.18
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rcutiny.h
4.31
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rcutree.h
3.64
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reboot.h
1.91
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reciprocal_div.h
993
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regmap.h
35.16
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regset.h
13
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relay.h
8.61
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remoteproc.h
17.47
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reservation.h
4.41
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reset-controller.h
1.89
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reset.h
2.38
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resource.h
306
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resource_ext.h
2.22
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rfkill-gpio.h
1.13
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rfkill-regulator.h
1.38
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rfkill.h
9.49
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rhashtable.h
27.07
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ring_buffer.h
6.7
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rio.h
16.47
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rio_drv.h
14.01
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rio_ids.h
1.22
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rio_regs.h
14.73
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rmap.h
8.04
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rndis.h
16.83
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root_dev.h
540
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rotary_encoder.h
362
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rpmsg.h
11.41
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rslib.h
2.99
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rtc-ds2404.h
467
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rtc-v3020.h
1.03
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rtc.h
6.9
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rtmutex.h
2.82
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rtnetlink.h
3.9
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rwlock.h
4.29
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rwlock_api_smp.h
7.63
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rwlock_types.h
1.18
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rwsem-spinlock.h
1.47
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rwsem.h
5.12
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rxrpc.h
2.33
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2016-01-11 00:01
s3c_adc_battery.h
932
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sa11x0-dma.h
572
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scatterlist.h
11.58
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scc.h
2.8
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sched.h
94.27
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sched_clock.h
559
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scif.h
58.85
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scpi_protocol.h
2.36
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screen_info.h
152
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sctp.h
21.93
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scx200.h
1.78
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scx200_gpio.h
2.34
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sdb.h
4.13
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sdla.h
6.9
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seccomp.h
2.7
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securebits.h
200
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security.h
44.34
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selection.h
1.34
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selinux.h
910
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sem.h
1.3
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semaphore.h
1.36
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seq_buf.h
3.11
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seq_file.h
6.63
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seq_file_net.h
674
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seqlock.h
16.34
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seqno-fence.h
3.91
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serial.h
630
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serial_8250.h
5.35
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serial_bcm63xx.h
4.69
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serial_core.h
16.06
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serial_max3100.h
1.39
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serial_pnx8xxx.h
2.61
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serial_s3c.h
9.24
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serial_sci.h
1.78
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serio.h
4.38
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sfi.h
5.73
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sfi_acpi.h
3.39
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sh_clk.h
6.09
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sh_dma.h
3.61
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sh_eth.h
396
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sh_intc.h
3.39
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sh_timer.h
133
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shdma-base.h
4.41
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shm.h
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Save
Rename
/* * Copyright 2003-2005 Red Hat, Inc. All rights reserved. * Copyright 2003-2005 Jeff Garzik * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * * libata documentation is available via 'make {ps|pdf}docs', * as Documentation/DocBook/libata.* * */ #ifndef __LINUX_LIBATA_H__ #define __LINUX_LIBATA_H__ #include <linux/delay.h> #include <linux/jiffies.h> #include <linux/interrupt.h> #include <linux/dma-mapping.h> #include <linux/scatterlist.h> #include <linux/io.h> #include <linux/ata.h> #include <linux/workqueue.h> #include <scsi/scsi_host.h> #include <linux/acpi.h> #include <linux/cdrom.h> #include <linux/sched.h> #include <linux/async.h> /* * Define if arch has non-standard setup. This is a _PCI_ standard * not a legacy or ISA standard. */ #ifdef CONFIG_ATA_NONSTANDARD #include <asm/libata-portmap.h> #else #include <asm-generic/libata-portmap.h> #endif /* * compile-time options: to be removed as soon as all the drivers are * converted to the new debugging mechanism */ #undef ATA_DEBUG /* debugging output */ #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ #undef ATA_NDEBUG /* define to disable quick runtime checks */ /* note: prints function name for you */ #ifdef ATA_DEBUG #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) #ifdef ATA_VERBOSE_DEBUG #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) #else #define VPRINTK(fmt, args...) #endif /* ATA_VERBOSE_DEBUG */ #else #define DPRINTK(fmt, args...) #define VPRINTK(fmt, args...) #endif /* ATA_DEBUG */ #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) #define ata_print_version_once(dev, version) \ ({ \ static bool __print_once; \ \ if (!__print_once) { \ __print_once = true; \ ata_print_version(dev, version); \ } \ }) /* NEW: debug levels */ #define HAVE_LIBATA_MSG 1 enum { ATA_MSG_DRV = 0x0001, ATA_MSG_INFO = 0x0002, ATA_MSG_PROBE = 0x0004, ATA_MSG_WARN = 0x0008, ATA_MSG_MALLOC = 0x0010, ATA_MSG_CTL = 0x0020, ATA_MSG_INTR = 0x0040, ATA_MSG_ERR = 0x0080, }; #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) { if (dval < 0 || dval >= (sizeof(u32) * 8)) return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ if (!dval) return 0; return (1 << dval) - 1; } /* defines only for the constants which don't work well as enums */ #define ATA_TAG_POISON 0xfafbfcfdU enum { /* various global constants */ LIBATA_MAX_PRD = ATA_MAX_PRD / 2, LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ ATA_DEF_QUEUE = 1, /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ ATA_MAX_QUEUE = 32, ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, ATA_SHORT_PAUSE = 16, ATAPI_MAX_DRAIN = 16 << 10, ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, ATA_SHT_EMULATED = 1, ATA_SHT_THIS_ID = -1, ATA_SHT_USE_CLUSTERING = 1, /* struct ata_taskfile flags */ ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ /* protocol flags */ ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ /* struct ata_device stuff */ ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ ATA_DFLAG_AN = (1 << 7), /* AN configured */ ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ ATA_DFLAG_CFG_MASK = (1 << 12) - 1, ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ ATA_DFLAG_INIT_MASK = (1 << 24) - 1, ATA_DFLAG_DETACH = (1 << 24), ATA_DFLAG_DETACHED = (1 << 25), ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ ATA_DEV_ATAPI = 3, /* ATAPI device */ ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ ATA_DEV_PMP = 5, /* SATA port multiplier */ ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ ATA_DEV_SEMB = 7, /* SEMB */ ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ ATA_DEV_ZAC = 9, /* ZAC device */ ATA_DEV_NONE = 10, /* no device */ /* struct ata_link flags */ ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ /* struct ata_port flags */ ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ /* (doesn't imply presence) */ ATA_FLAG_SATA = (1 << 1), ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */ ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD * doesn't handle PIO interrupts */ ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ ATA_FLAG_DEBUGMSG = (1 << 13), ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ ATA_FLAG_AN = (1 << 18), /* controller supports AN */ ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ ATA_FLAG_EM = (1 << 21), /* driver supports enclosure * management */ ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity * led */ ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ /* bits 24:31 of ap->flags are reserved for LLD specific flags */ /* struct ata_port pflags */ ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ /* struct ata_queued_cmd flags */ ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ /* host set flags */ ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ ATA_HOST_STARTED = (1 << 1), /* Host started */ ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ /* bits 24:31 of host->flags are reserved for LLD specific flags */ /* various lengths of time */ ATA_TMOUT_BOOT = 30000, /* heuristic */ ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ ATA_TMOUT_INTERNAL_QUICK = 5000, ATA_TMOUT_MAX_PARK = 30000, /* * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s * is too much without parallel probing. Use 2s if parallel * probing is available, 800ms otherwise. */ ATA_TMOUT_FF_WAIT_LONG = 2000, ATA_TMOUT_FF_WAIT = 800, /* Spec mandates to wait for ">= 2ms" before checking status * after reset. We wait 150ms, because that was the magic * delay used for ATAPI devices in Hale Landis's ATADRVR, for * the period of time between when the ATA command register is * written, and then status is checked. Because waiting for * "a while" before checking status is fine, post SRST, we * perform this magic delay here as well. * * Old drivers/ide uses the 2mS rule and then waits for ready. */ ATA_WAIT_AFTER_RESET = 150, /* If PMP is supported, we have to do follow-up SRST. As some * PMPs don't send D2H Reg FIS after hardreset, LLDs are * advised to wait only for the following duration before * doing SRST. */ ATA_TMOUT_PMP_SRST_WAIT = 5000, /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might * be a spurious PHY event, so ignore the first PHY event that * occurs within 10s after the policy change. */ ATA_TMOUT_SPURIOUS_PHY = 10000, /* ATA bus states */ BUS_UNKNOWN = 0, BUS_DMA = 1, BUS_IDLE = 2, BUS_NOINTR = 3, BUS_NODATA = 4, BUS_TIMER = 5, BUS_PIO = 6, BUS_EDD = 7, BUS_IDENTIFY = 8, BUS_PACKET = 9, /* SATA port states */ PORT_UNKNOWN = 0, PORT_ENABLED = 1, PORT_DISABLED = 2, /* encoding various smaller bitmaps into a single * unsigned long bitmap */ ATA_NR_PIO_MODES = 7, ATA_NR_MWDMA_MODES = 5, ATA_NR_UDMA_MODES = 8, ATA_SHIFT_PIO = 0, ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, /* size of buffer to pad xfers ending on unaligned boundaries */ ATA_DMA_PAD_SZ = 4, /* ering size */ ATA_ERING_SIZE = 32, /* return values for ->qc_defer */ ATA_DEFER_LINK = 1, ATA_DEFER_PORT = 2, /* desc_len for ata_eh_info and context */ ATA_EH_DESC_LEN = 80, /* reset / recovery action types */ ATA_EH_REVALIDATE = (1 << 0), ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, ATA_EH_ENABLE_LINK = (1 << 3), ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | ATA_EH_ENABLE_LINK, /* ata_eh_info->flags */ ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ ATA_EHI_QUIET = (1 << 3), /* be quiet */ ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, /* mask of flags to transfer *to* the slave link */ ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, /* max tries if error condition is still set after ->error_handler */ ATA_EH_MAX_TRIES = 5, /* sometimes resuming a link requires several retries */ ATA_LINK_RESUME_TRIES = 5, /* how hard are we gonna try to probe/recover devices */ ATA_PROBE_MAX_TRIES = 3, ATA_EH_DEV_TRIES = 3, ATA_EH_PMP_TRIES = 5, ATA_EH_PMP_LINK_TRIES = 3, SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ /* This should match the actual table size of * ata_eh_cmd_timeout_table in libata-eh.c. */ ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, /* Horkage types. May be set by libata or controller on drives (some horkage may be drive/controller pair dependent */ ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands not multiple of 16 bytes */ ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */ ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ /* ATAPI command types */ ATAPI_READ = 0, /* READs */ ATAPI_WRITE = 1, /* WRITEs */ ATAPI_READ_CD = 2, /* READ CD [MSF] */ ATAPI_PASS_THRU = 3, /* SAT pass-thru */ ATAPI_MISC = 4, /* the rest */ /* Timing constants */ ATA_TIMING_SETUP = (1 << 0), ATA_TIMING_ACT8B = (1 << 1), ATA_TIMING_REC8B = (1 << 2), ATA_TIMING_CYC8B = (1 << 3), ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | ATA_TIMING_CYC8B, ATA_TIMING_ACTIVE = (1 << 4), ATA_TIMING_RECOVER = (1 << 5), ATA_TIMING_DMACK_HOLD = (1 << 6), ATA_TIMING_CYCLE = (1 << 7), ATA_TIMING_UDMA = (1 << 8), ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, /* ACPI constants */ ATA_ACPI_FILTER_SETXFER = 1 << 0, ATA_ACPI_FILTER_LOCK = 1 << 1, ATA_ACPI_FILTER_DIPM = 1 << 2, ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | ATA_ACPI_FILTER_LOCK | ATA_ACPI_FILTER_DIPM, }; enum ata_xfer_mask { ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO, ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA, ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA, }; enum hsm_task_states { HSM_ST_IDLE, /* no command on going */ HSM_ST_FIRST, /* (waiting the device to) write CDB or first data block */ HSM_ST, /* (waiting the device to) transfer data */ HSM_ST_LAST, /* (waiting the device to) complete command */ HSM_ST_ERR, /* error */ }; enum ata_completion_errors { AC_ERR_OK = 0, /* no error */ AC_ERR_DEV = (1 << 0), /* device reported error */ AC_ERR_HSM = (1 << 1), /* host state machine violation */ AC_ERR_TIMEOUT = (1 << 2), /* timeout */ AC_ERR_MEDIA = (1 << 3), /* media error */ AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ AC_ERR_SYSTEM = (1 << 6), /* system error */ AC_ERR_INVALID = (1 << 7), /* invalid argument */ AC_ERR_OTHER = (1 << 8), /* unknown */ AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ }; /* * Link power management policy: If you alter this, you also need to * alter libata-scsi.c (for the ascii descriptions) */ enum ata_lpm_policy { ATA_LPM_UNKNOWN, ATA_LPM_MAX_POWER, ATA_LPM_MED_POWER, ATA_LPM_MIN_POWER, }; enum ata_lpm_hints { ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ }; /* forward declarations */ struct scsi_device; struct ata_port_operations; struct ata_port; struct ata_link; struct ata_queued_cmd; /* typedefs */ typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, unsigned long deadline); typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); extern struct device_attribute dev_attr_link_power_management_policy; extern struct device_attribute dev_attr_unload_heads; extern struct device_attribute dev_attr_em_message_type; extern struct device_attribute dev_attr_em_message; extern struct device_attribute dev_attr_sw_activity; enum sw_activity { OFF, BLINK_ON, BLINK_OFF, }; struct ata_taskfile { unsigned long flags; /* ATA_TFLAG_xxx */ u8 protocol; /* ATA_PROT_xxx */ u8 ctl; /* control reg */ u8 hob_feature; /* additional data */ u8 hob_nsect; /* to support LBA48 */ u8 hob_lbal; u8 hob_lbam; u8 hob_lbah; u8 feature; u8 nsect; u8 lbal; u8 lbam; u8 lbah; u8 device; u8 command; /* IO operation */ u32 auxiliary; /* auxiliary field */ /* from SATA 3.1 and */ /* ATA-8 ACS-3 */ }; #ifdef CONFIG_ATA_SFF struct ata_ioports { void __iomem *cmd_addr; void __iomem *data_addr; void __iomem *error_addr; void __iomem *feature_addr; void __iomem *nsect_addr; void __iomem *lbal_addr; void __iomem *lbam_addr; void __iomem *lbah_addr; void __iomem *device_addr; void __iomem *status_addr; void __iomem *command_addr; void __iomem *altstatus_addr; void __iomem *ctl_addr; #ifdef CONFIG_ATA_BMDMA void __iomem *bmdma_addr; #endif /* CONFIG_ATA_BMDMA */ void __iomem *scr_addr; }; #endif /* CONFIG_ATA_SFF */ struct ata_host { spinlock_t lock; struct device *dev; void __iomem * const *iomap; unsigned int n_ports; unsigned int n_tags; /* nr of NCQ tags */ void *private_data; struct ata_port_operations *ops; unsigned long flags; struct mutex eh_mutex; struct task_struct *eh_owner; struct ata_port *simplex_claimed; /* channel owning the DMA */ struct ata_port *ports[0]; }; struct ata_queued_cmd { struct ata_port *ap; struct ata_device *dev; struct scsi_cmnd *scsicmd; void (*scsidone)(struct scsi_cmnd *); struct ata_taskfile tf; u8 cdb[ATAPI_CDB_LEN]; unsigned long flags; /* ATA_QCFLAG_xxx */ unsigned int tag; unsigned int n_elem; unsigned int orig_n_elem; int dma_dir; unsigned int sect_size; unsigned int nbytes; unsigned int extrabytes; unsigned int curbytes; struct scatterlist sgent; struct scatterlist *sg; struct scatterlist *cursg; unsigned int cursg_ofs; unsigned int err_mask; struct ata_taskfile result_tf; ata_qc_cb_t complete_fn; void *private_data; void *lldd_task; }; struct ata_port_stats { unsigned long unhandled_irq; unsigned long idle_irq; unsigned long rw_reqbuf; }; struct ata_ering_entry { unsigned int eflags; unsigned int err_mask; u64 timestamp; }; struct ata_ering { int cursor; struct ata_ering_entry ring[ATA_ERING_SIZE]; }; struct ata_device { struct ata_link *link; unsigned int devno; /* 0 or 1 */ unsigned int horkage; /* List of broken features */ unsigned long flags; /* ATA_DFLAG_xxx */ struct scsi_device *sdev; /* attached SCSI device */ void *private_data; #ifdef CONFIG_ATA_ACPI union acpi_object *gtf_cache; unsigned int gtf_filter; #endif #ifdef CONFIG_SATA_ZPODD void *zpodd; #endif struct device tdev; /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ u64 n_sectors; /* size of device, if ATA */ u64 n_native_sectors; /* native size, if ATA */ unsigned int class; /* ATA_DEV_xxx */ unsigned long unpark_deadline; u8 pio_mode; u8 dma_mode; u8 xfer_mode; unsigned int xfer_shift; /* ATA_SHIFT_xxx */ unsigned int multi_count; /* sectors count for READ/WRITE MULTIPLE */ unsigned int max_sectors; /* per-device max sectors */ unsigned int cdb_len; /* per-dev xfer mask */ unsigned long pio_mask; unsigned long mwdma_mask; unsigned long udma_mask; /* for CHS addressing */ u16 cylinders; /* Number of cylinders */ u16 heads; /* Number of heads */ u16 sectors; /* Number of sectors per track */ union { u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ } ____cacheline_aligned; /* DEVSLP Timing Variables from Identify Device Data Log */ u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; /* NCQ send and receive log subcommand support */ u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; /* error history */ int spdn_cnt; /* ering is CLEAR_END, read comment above CLEAR_END */ struct ata_ering ering; }; /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are * cleared to zero on ata_dev_init(). */ #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) struct ata_eh_info { struct ata_device *dev; /* offending device */ u32 serror; /* SError from LLDD */ unsigned int err_mask; /* port-wide err_mask */ unsigned int action; /* ATA_EH_* action mask */ unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ unsigned int flags; /* ATA_EHI_* flags */ unsigned int probe_mask; char desc[ATA_EH_DESC_LEN]; int desc_len; }; struct ata_eh_context { struct ata_eh_info i; int tries[ATA_MAX_DEVICES]; int cmd_timeout_idx[ATA_MAX_DEVICES] [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; unsigned int classes[ATA_MAX_DEVICES]; unsigned int did_probe_mask; unsigned int unloaded_mask; unsigned int saved_ncq_enabled; u8 saved_xfer_mode[ATA_MAX_DEVICES]; /* timestamp for the last reset attempt or success */ unsigned long last_reset; }; struct ata_acpi_drive { u32 pio; u32 dma; } __packed; struct ata_acpi_gtm { struct ata_acpi_drive drive[2]; u32 flags; } __packed; struct ata_link { struct ata_port *ap; int pmp; /* port multiplier port # */ struct device tdev; unsigned int active_tag; /* active tag on this link */ u32 sactive; /* active NCQ commands */ unsigned int flags; /* ATA_LFLAG_xxx */ u32 saved_scontrol; /* SControl on probe */ unsigned int hw_sata_spd_limit; unsigned int sata_spd_limit; unsigned int sata_spd; /* current SATA PHY speed */ enum ata_lpm_policy lpm_policy; /* record runtime error info, protected by host_set lock */ struct ata_eh_info eh_info; /* EH context */ struct ata_eh_context eh_context; struct ata_device device[ATA_MAX_DEVICES]; unsigned long last_lpm_change; /* when last LPM change happened */ }; #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) struct ata_port { struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ struct ata_port_operations *ops; spinlock_t *lock; /* Flags owned by the EH context. Only EH should touch these once the port is active */ unsigned long flags; /* ATA_FLAG_xxx */ /* Flags that change dynamically, protected by ap->lock */ unsigned int pflags; /* ATA_PFLAG_xxx */ unsigned int print_id; /* user visible unique port ID */ unsigned int local_port_no; /* host local port num */ unsigned int port_no; /* 0 based port no. inside the host */ #ifdef CONFIG_ATA_SFF struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ u8 ctl; /* cache of ATA control register */ u8 last_ctl; /* Cache last written value */ struct ata_link* sff_pio_task_link; /* link currently used */ struct delayed_work sff_pio_task; #ifdef CONFIG_ATA_BMDMA struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ #endif /* CONFIG_ATA_BMDMA */ #endif /* CONFIG_ATA_SFF */ unsigned int pio_mask; unsigned int mwdma_mask; unsigned int udma_mask; unsigned int cbl; /* cable type; ATA_CBL_xxx */ struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; unsigned long sas_tag_allocated; /* for sas tag allocation only */ unsigned int qc_active; int nr_active_links; /* #links with active qcs */ unsigned int sas_last_tag; /* track next tag hw expects */ struct ata_link link; /* host default link */ struct ata_link *slave_link; /* see ata_slave_link_init() */ int nr_pmp_links; /* nr of available PMP links */ struct ata_link *pmp_link; /* array of PMP links */ struct ata_link *excl_link; /* for PMP qc exclusion */ struct ata_port_stats stats; struct ata_host *host; struct device *dev; struct device tdev; struct mutex scsi_scan_mutex; struct delayed_work hotplug_task; struct work_struct scsi_rescan_task; unsigned int hsm_task_state; u32 msg_enable; struct list_head eh_done_q; wait_queue_head_t eh_wait_q; int eh_tries; struct completion park_req_pending; pm_message_t pm_mesg; enum ata_lpm_policy target_lpm_policy; struct timer_list fastdrain_timer; unsigned long fastdrain_cnt; async_cookie_t cookie; int em_message_type; void *private_data; #ifdef CONFIG_ATA_ACPI struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ #endif /* owned by EH */ u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; }; /* The following initializer overrides a method to NULL whether one of * its parent has the method defined or not. This is equivalent to * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant * expression and thus can't be used as an initializer. */ #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) struct ata_port_operations { /* * Command execution */ int (*qc_defer)(struct ata_queued_cmd *qc); int (*check_atapi_dma)(struct ata_queued_cmd *qc); enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc); unsigned int (*qc_issue)(struct ata_queued_cmd *qc); bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); /* * Configuration and exception handling */ int (*cable_detect)(struct ata_port *ap); unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); void (*dev_config)(struct ata_device *dev); void (*freeze)(struct ata_port *ap); void (*thaw)(struct ata_port *ap); ata_prereset_fn_t prereset; ata_reset_fn_t softreset; ata_reset_fn_t hardreset; ata_postreset_fn_t postreset; ata_prereset_fn_t pmp_prereset; ata_reset_fn_t pmp_softreset; ata_reset_fn_t pmp_hardreset; ata_postreset_fn_t pmp_postreset; void (*error_handler)(struct ata_port *ap); void (*lost_interrupt)(struct ata_port *ap); void (*post_internal_cmd)(struct ata_queued_cmd *qc); void (*sched_eh)(struct ata_port *ap); void (*end_eh)(struct ata_port *ap); /* * Optional features */ int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); void (*pmp_attach)(struct ata_port *ap); void (*pmp_detach)(struct ata_port *ap); int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, unsigned hints); /* * Start, stop, suspend and resume */ int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); int (*port_resume)(struct ata_port *ap); int (*port_start)(struct ata_port *ap); void (*port_stop)(struct ata_port *ap); void (*host_stop)(struct ata_host *host); #ifdef CONFIG_ATA_SFF /* * SFF / taskfile oriented ops */ void (*sff_dev_select)(struct ata_port *ap, unsigned int device); void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); u8 (*sff_check_status)(struct ata_port *ap); u8 (*sff_check_altstatus)(struct ata_port *ap); void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); void (*sff_exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); unsigned int (*sff_data_xfer)(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw); void (*sff_irq_on)(struct ata_port *); bool (*sff_irq_check)(struct ata_port *); void (*sff_irq_clear)(struct ata_port *); void (*sff_drain_fifo)(struct ata_queued_cmd *qc); #ifdef CONFIG_ATA_BMDMA void (*bmdma_setup)(struct ata_queued_cmd *qc); void (*bmdma_start)(struct ata_queued_cmd *qc); void (*bmdma_stop)(struct ata_queued_cmd *qc); u8 (*bmdma_status)(struct ata_port *ap); #endif /* CONFIG_ATA_BMDMA */ #endif /* CONFIG_ATA_SFF */ ssize_t (*em_show)(struct ata_port *ap, char *buf); ssize_t (*em_store)(struct ata_port *ap, const char *message, size_t size); ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); ssize_t (*sw_activity_store)(struct ata_device *dev, enum sw_activity val); ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, ssize_t size); /* * Obsolete */ void (*phy_reset)(struct ata_port *ap); void (*eng_timeout)(struct ata_port *ap); /* * ->inherits must be the last field and all the preceding * fields must be pointers. */ const struct ata_port_operations *inherits; }; struct ata_port_info { unsigned long flags; unsigned long link_flags; unsigned long pio_mask; unsigned long mwdma_mask; unsigned long udma_mask; struct ata_port_operations *port_ops; void *private_data; }; struct ata_timing { unsigned short mode; /* ATA mode */ unsigned short setup; /* t1 */ unsigned short act8b; /* t2 for 8-bit I/O */ unsigned short rec8b; /* t2i for 8-bit I/O */ unsigned short cyc8b; /* t0 for 8-bit I/O */ unsigned short active; /* t2 or tD */ unsigned short recover; /* t2i or tK */ unsigned short dmack_hold; /* tj */ unsigned short cycle; /* t0 */ unsigned short udma; /* t2CYCTYP/2 */ }; /* * Core layer - drivers/ata/libata-core.c */ extern const unsigned long sata_deb_timing_normal[]; extern const unsigned long sata_deb_timing_hotplug[]; extern const unsigned long sata_deb_timing_long[]; extern struct ata_port_operations ata_dummy_port_ops; extern const struct ata_port_info ata_dummy_port_info; /* * protocol tests */ static inline unsigned int ata_prot_flags(u8 prot) { switch (prot) { case ATA_PROT_NODATA: return 0; case ATA_PROT_PIO: return ATA_PROT_FLAG_PIO; case ATA_PROT_DMA: return ATA_PROT_FLAG_DMA; case ATA_PROT_NCQ: return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; case ATAPI_PROT_NODATA: return ATA_PROT_FLAG_ATAPI; case ATAPI_PROT_PIO: return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; case ATAPI_PROT_DMA: return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; } return 0; } static inline int ata_is_atapi(u8 prot) { return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; } static inline int ata_is_nodata(u8 prot) { return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); } static inline int ata_is_pio(u8 prot) { return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; } static inline int ata_is_dma(u8 prot) { return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; } static inline int ata_is_ncq(u8 prot) { return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; } static inline int ata_is_data(u8 prot) { return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; } static inline int is_multi_taskfile(struct ata_taskfile *tf) { return (tf->command == ATA_CMD_READ_MULTI) || (tf->command == ATA_CMD_WRITE_MULTI) || (tf->command == ATA_CMD_READ_MULTI_EXT) || (tf->command == ATA_CMD_WRITE_MULTI_EXT) || (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); } static inline const unsigned long * sata_ehc_deb_timing(struct ata_eh_context *ehc) { if (ehc->i.flags & ATA_EHI_HOTPLUGGED) return sata_deb_timing_hotplug; else return sata_deb_timing_normal; } static inline int ata_port_is_dummy(struct ata_port *ap) { return ap->ops == &ata_dummy_port_ops; } extern int sata_set_spd(struct ata_link *link); extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, int (*check_ready)(struct ata_link *link)); extern int sata_link_debounce(struct ata_link *link, const unsigned long *params, unsigned long deadline); extern int sata_link_resume(struct ata_link *link, const unsigned long *params, unsigned long deadline); extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, bool spm_wakeup); extern int sata_link_hardreset(struct ata_link *link, const unsigned long *timing, unsigned long deadline, bool *online, int (*check_ready)(struct ata_link *)); extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, unsigned long deadline); extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, const struct ata_port_info * const * ppi, int n_ports); extern int ata_slave_link_init(struct ata_port *ap); extern int ata_host_start(struct ata_host *host); extern int ata_host_register(struct ata_host *host, struct scsi_host_template *sht); extern int ata_host_activate(struct ata_host *host, int irq, irq_handler_t irq_handler, unsigned long irq_flags, struct scsi_host_template *sht); extern void ata_host_detach(struct ata_host *host); extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, int cmd, void __user *arg); extern void ata_sas_port_destroy(struct ata_port *); extern struct ata_port *ata_sas_port_alloc(struct ata_host *, struct ata_port_info *, struct Scsi_Host *); extern void ata_sas_async_probe(struct ata_port *ap); extern int ata_sas_sync_probe(struct ata_port *ap); extern int ata_sas_port_init(struct ata_port *); extern int ata_sas_port_start(struct ata_port *ap); extern void ata_sas_port_stop(struct ata_port *ap); extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); extern int sata_scr_valid(struct ata_link *link); extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); extern int sata_scr_write(struct ata_link *link, int reg, u32 val); extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); extern bool ata_link_online(struct ata_link *link); extern bool ata_link_offline(struct ata_link *link); #ifdef CONFIG_PM extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); extern void ata_host_resume(struct ata_host *host); extern void ata_sas_port_suspend(struct ata_port *ap); extern void ata_sas_port_resume(struct ata_port *ap); #else static inline void ata_sas_port_suspend(struct ata_port *ap) { } static inline void ata_sas_port_resume(struct ata_port *ap) { } #endif extern int ata_ratelimit(void); extern void ata_msleep(struct ata_port *ap, unsigned int msecs); extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, u32 val, unsigned long interval, unsigned long timeout); extern int atapi_cmd_type(u8 opcode); extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis); extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); extern unsigned long ata_pack_xfermask(unsigned long pio_mask, unsigned long mwdma_mask, unsigned long udma_mask); extern void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask, unsigned long *mwdma_mask, unsigned long *udma_mask); extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); extern int ata_xfer_mode2shift(unsigned long xfer_mode); extern const char *ata_mode_string(unsigned long xfer_mask); extern unsigned long ata_id_xfermask(const u16 *id); extern int ata_std_qc_defer(struct ata_queued_cmd *qc); extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc); extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem); extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); extern void ata_dev_disable(struct ata_device *adev); extern void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); extern void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); extern unsigned int ata_do_dev_read_id(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); extern void ata_qc_complete(struct ata_queued_cmd *qc); extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); extern int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]); extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); extern int ata_scsi_slave_config(struct scsi_device *sdev); extern void ata_scsi_slave_destroy(struct scsi_device *sdev); extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth); extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, int queue_depth); extern struct ata_device *ata_dev_pair(struct ata_device *adev); extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); extern bool sata_lpm_ignore_phy_events(struct ata_link *link); extern int ata_cable_40wire(struct ata_port *ap); extern int ata_cable_80wire(struct ata_port *ap); extern int ata_cable_sata(struct ata_port *ap); extern int ata_cable_ignore(struct ata_port *ap); extern int ata_cable_unknown(struct ata_port *ap); /* Timing helpers */ extern unsigned int ata_pio_need_iordy(const struct ata_device *); extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); extern int ata_timing_compute(struct ata_device *, unsigned short, struct ata_timing *, int, int); extern void ata_timing_merge(const struct ata_timing *, const struct ata_timing *, struct ata_timing *, unsigned int); extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); /* PCI */ #ifdef CONFIG_PCI struct pci_dev; struct pci_bits { unsigned int reg; /* PCI config register to read */ unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ unsigned long mask; unsigned long val; }; extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); extern void ata_pci_remove_one(struct pci_dev *pdev); #ifdef CONFIG_PM extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); extern int ata_pci_device_resume(struct pci_dev *pdev); #endif /* CONFIG_PM */ #endif /* CONFIG_PCI */ struct platform_device; extern int ata_platform_remove_one(struct platform_device *pdev); /* * ACPI - drivers/ata/libata-acpi.c */ #ifdef CONFIG_ATA_ACPI static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) { if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) return &ap->__acpi_init_gtm; return NULL; } int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, const struct ata_acpi_gtm *gtm); int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); #else static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) { return NULL; } static inline int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm) { return -ENOSYS; } static inline int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm) { return -ENOSYS; } static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, const struct ata_acpi_gtm *gtm) { return 0; } static inline int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm) { return 0; } #endif /* * EH - drivers/ata/libata-eh.c */ extern void ata_port_schedule_eh(struct ata_port *ap); extern void ata_port_wait_eh(struct ata_port *ap); extern int ata_link_abort(struct ata_link *link); extern int ata_port_abort(struct ata_port *ap); extern int ata_port_freeze(struct ata_port *ap); extern int sata_async_notification(struct ata_port *ap); extern void ata_eh_freeze_port(struct ata_port *ap); extern void ata_eh_thaw_port(struct ata_port *ap); extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); extern void ata_eh_analyze_ncq_error(struct ata_link *link); extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, ata_reset_fn_t softreset, ata_reset_fn_t hardreset, ata_postreset_fn_t postreset); extern void ata_std_error_handler(struct ata_port *ap); extern void ata_std_sched_eh(struct ata_port *ap); extern void ata_std_end_eh(struct ata_port *ap); extern int ata_link_nr_enabled(struct ata_link *link); /* * Base operations to inherit from and initializers for sht * * Operations * * base : Common to all libata drivers. * sata : SATA controllers w/ native interface. * pmp : SATA controllers w/ PMP support. * sff : SFF ATA controllers w/o BMDMA support. * bmdma : SFF ATA controllers w/ BMDMA support. * * sht initializers * * BASE : Common to all libata drivers. The user must set * sg_tablesize and dma_boundary. * PIO : SFF ATA controllers w/ only PIO support. * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and * dma_boundary are set to BMDMA limits. * NCQ : SATA controllers supporting NCQ. The user must set * sg_tablesize, dma_boundary and can_queue. */ extern const struct ata_port_operations ata_base_port_ops; extern const struct ata_port_operations sata_port_ops; extern struct device_attribute *ata_common_sdev_attrs[]; /* * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated * by the edge drivers. Because the 'module' field of sht must be the * edge driver's module reference, otherwise the driver can be unloaded * even if the scsi_device is being accessed. */ #define ATA_BASE_SHT(drv_name) \ .module = THIS_MODULE, \ .name = drv_name, \ .ioctl = ata_scsi_ioctl, \ .queuecommand = ata_scsi_queuecmd, \ .can_queue = ATA_DEF_QUEUE, \ .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ .this_id = ATA_SHT_THIS_ID, \ .emulated = ATA_SHT_EMULATED, \ .use_clustering = ATA_SHT_USE_CLUSTERING, \ .proc_name = drv_name, \ .slave_configure = ata_scsi_slave_config, \ .slave_destroy = ata_scsi_slave_destroy, \ .bios_param = ata_std_bios_param, \ .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ .sdev_attrs = ata_common_sdev_attrs #define ATA_NCQ_SHT(drv_name) \ ATA_BASE_SHT(drv_name), \ .change_queue_depth = ata_scsi_change_queue_depth /* * PMP helpers */ #ifdef CONFIG_SATA_PMP static inline bool sata_pmp_supported(struct ata_port *ap) { return ap->flags & ATA_FLAG_PMP; } static inline bool sata_pmp_attached(struct ata_port *ap) { return ap->nr_pmp_links != 0; } static inline int ata_is_host_link(const struct ata_link *link) { return link == &link->ap->link || link == link->ap->slave_link; } #else /* CONFIG_SATA_PMP */ static inline bool sata_pmp_supported(struct ata_port *ap) { return false; } static inline bool sata_pmp_attached(struct ata_port *ap) { return false; } static inline int ata_is_host_link(const struct ata_link *link) { return 1; } #endif /* CONFIG_SATA_PMP */ static inline int sata_srst_pmp(struct ata_link *link) { if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) return SATA_PMP_CTRL_PORT; return link->pmp; } /* * printk helpers */ __printf(3, 4) void ata_port_printk(const struct ata_port *ap, const char *level, const char *fmt, ...); __printf(3, 4) void ata_link_printk(const struct ata_link *link, const char *level, const char *fmt, ...); __printf(3, 4) void ata_dev_printk(const struct ata_device *dev, const char *level, const char *fmt, ...); #define ata_port_err(ap, fmt, ...) \ ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) #define ata_port_warn(ap, fmt, ...) \ ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) #define ata_port_notice(ap, fmt, ...) \ ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) #define ata_port_info(ap, fmt, ...) \ ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) #define ata_port_dbg(ap, fmt, ...) \ ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) #define ata_link_err(link, fmt, ...) \ ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) #define ata_link_warn(link, fmt, ...) \ ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) #define ata_link_notice(link, fmt, ...) \ ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) #define ata_link_info(link, fmt, ...) \ ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) #define ata_link_dbg(link, fmt, ...) \ ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) #define ata_dev_err(dev, fmt, ...) \ ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) #define ata_dev_warn(dev, fmt, ...) \ ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) #define ata_dev_notice(dev, fmt, ...) \ ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) #define ata_dev_info(dev, fmt, ...) \ ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) #define ata_dev_dbg(dev, fmt, ...) \ ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) void ata_print_version(const struct device *dev, const char *version); /* * ata_eh_info helpers */ extern __printf(2, 3) void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); extern __printf(2, 3) void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) { ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; ehi->flags |= ATA_EHI_HOTPLUGGED; ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; ehi->err_mask |= AC_ERR_ATA_BUS; } /* * port description helpers */ extern __printf(2, 3) void ata_port_desc(struct ata_port *ap, const char *fmt, ...); #ifdef CONFIG_PCI extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, const char *name); #endif static inline unsigned int ata_tag_valid(unsigned int tag) { return (tag < ATA_MAX_QUEUE) ? 1 : 0; } static inline unsigned int ata_tag_internal(unsigned int tag) { return tag == ATA_TAG_INTERNAL; } /* * device helpers */ static inline unsigned int ata_class_enabled(unsigned int class) { return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || class == ATA_DEV_PMP || class == ATA_DEV_SEMB || class == ATA_DEV_ZAC; } static inline unsigned int ata_class_disabled(unsigned int class) { return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; } static inline unsigned int ata_class_absent(unsigned int class) { return !ata_class_enabled(class) && !ata_class_disabled(class); } static inline unsigned int ata_dev_enabled(const struct ata_device *dev) { return ata_class_enabled(dev->class); } static inline unsigned int ata_dev_disabled(const struct ata_device *dev) { return ata_class_disabled(dev->class); } static inline unsigned int ata_dev_absent(const struct ata_device *dev) { return ata_class_absent(dev->class); } /* * link helpers */ static inline int ata_link_max_devices(const struct ata_link *link) { if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) return 2; return 1; } static inline int ata_link_active(struct ata_link *link) { return ata_tag_valid(link->active_tag) || link->sactive; } /* * Iterators * * ATA_LITER_* constants are used to select link iteration mode and * ATA_DITER_* device iteration mode. * * For a custom iteration directly using ata_{link|dev}_next(), if * @link or @dev, respectively, is NULL, the first element is * returned. @dev and @link can be any valid device or link and the * next element according to the iteration mode will be returned. * After the last element, NULL is returned. */ enum ata_link_iter_mode { ATA_LITER_EDGE, /* if present, PMP links only; otherwise, * host link. no slave link */ ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ ATA_LITER_PMP_FIRST, /* PMP links followed by host link, * slave link still comes after host link */ }; enum ata_dev_iter_mode { ATA_DITER_ENABLED, ATA_DITER_ENABLED_REVERSE, ATA_DITER_ALL, ATA_DITER_ALL_REVERSE, }; extern struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap, enum ata_link_iter_mode mode); extern struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link, enum ata_dev_iter_mode mode); /* * Shortcut notation for iterations * * ata_for_each_link() iterates over each link of @ap according to * @mode. @link points to the current link in the loop. @link is * NULL after loop termination. ata_for_each_dev() works the same way * except that it iterates over each device of @link. * * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be * specified when using the following shorthand notations. Only the * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be * specified. This not only increases brevity but also makes it * impossible to use ATA_LITER_* for device iteration or vice-versa. */ #define ata_for_each_link(link, ap, mode) \ for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) #define ata_for_each_dev(dev, link, mode) \ for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) /** * ata_ncq_enabled - Test whether NCQ is enabled * @dev: ATA device to test for * * LOCKING: * spin_lock_irqsave(host lock) * * RETURNS: * 1 if NCQ is enabled for @dev, 0 otherwise. */ static inline int ata_ncq_enabled(struct ata_device *dev) { return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; } static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) { return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); } static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) { qc->tf.ctl |= ATA_NIEN; } static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, unsigned int tag) { if (likely(ata_tag_valid(tag))) return &ap->qcmd[tag]; return NULL; } static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, unsigned int tag) { struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); if (unlikely(!qc) || !ap->ops->error_handler) return qc; if ((qc->flags & (ATA_QCFLAG_ACTIVE | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) return qc; return NULL; } static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) { return qc->nbytes - min(qc->extrabytes, qc->nbytes); } static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) { memset(tf, 0, sizeof(*tf)); #ifdef CONFIG_ATA_SFF tf->ctl = dev->link->ap->ctl; #else tf->ctl = ATA_DEVCTL_OBS; #endif if (dev->devno == 0) tf->device = ATA_DEVICE_OBS; else tf->device = ATA_DEVICE_OBS | ATA_DEV1; } static inline void ata_qc_reinit(struct ata_queued_cmd *qc) { qc->dma_dir = DMA_NONE; qc->sg = NULL; qc->flags = 0; qc->cursg = NULL; qc->cursg_ofs = 0; qc->nbytes = qc->extrabytes = qc->curbytes = 0; qc->n_elem = 0; qc->err_mask = 0; qc->sect_size = ATA_SECT_SIZE; ata_tf_init(qc->dev, &qc->tf); /* init result_tf such that it indicates normal completion */ qc->result_tf.command = ATA_DRDY; qc->result_tf.feature = 0; } static inline int ata_try_flush_cache(const struct ata_device *dev) { return ata_id_wcache_enabled(dev->id) || ata_id_has_flush(dev->id) || ata_id_has_flush_ext(dev->id); } static inline unsigned int ac_err_mask(u8 status) { if (status & (ATA_BUSY | ATA_DRQ)) return AC_ERR_HSM; if (status & (ATA_ERR | ATA_DF)) return AC_ERR_DEV; return 0; } static inline unsigned int __ac_err_mask(u8 status) { unsigned int mask = ac_err_mask(status); if (mask == 0) return AC_ERR_OTHER; return mask; } static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) { return *(struct ata_port **)&host->hostdata[0]; } static inline int ata_check_ready(u8 status) { if (!(status & ATA_BUSY)) return 1; /* 0xff indicates either no device or device not ready */ if (status == 0xff) return -ENODEV; return 0; } static inline unsigned long ata_deadline(unsigned long from_jiffies, unsigned long timeout_msecs) { return from_jiffies + msecs_to_jiffies(timeout_msecs); } /* Don't open code these in drivers as there are traps. Firstly the range may change in future hardware and specs, secondly 0xFF means 'no DMA' but is > UDMA_0. Dyma ddreigiau */ static inline int ata_using_mwdma(struct ata_device *adev) { if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) return 1; return 0; } static inline int ata_using_udma(struct ata_device *adev) { if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) return 1; return 0; } static inline int ata_dma_enabled(struct ata_device *adev) { return (adev->dma_mode == 0xFF ? 0 : 1); } /************************************************************************** * PMP - drivers/ata/libata-pmp.c */ #ifdef CONFIG_SATA_PMP extern const struct ata_port_operations sata_pmp_port_ops; extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); extern void sata_pmp_error_handler(struct ata_port *ap); #else /* CONFIG_SATA_PMP */ #define sata_pmp_port_ops sata_port_ops #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer #define sata_pmp_error_handler ata_std_error_handler #endif /* CONFIG_SATA_PMP */ /************************************************************************** * SFF - drivers/ata/libata-sff.c */ #ifdef CONFIG_ATA_SFF extern const struct ata_port_operations ata_sff_port_ops; extern const struct ata_port_operations ata_bmdma32_port_ops; /* PIO only, sg_tablesize and dma_boundary limits can be removed */ #define ATA_PIO_SHT(drv_name) \ ATA_BASE_SHT(drv_name), \ .sg_tablesize = LIBATA_MAX_PRD, \ .dma_boundary = ATA_DMA_BOUNDARY extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); extern u8 ata_sff_check_status(struct ata_port *ap); extern void ata_sff_pause(struct ata_port *ap); extern void ata_sff_dma_pause(struct ata_port *ap); extern int ata_sff_busy_sleep(struct ata_port *ap, unsigned long timeout_pat, unsigned long timeout); extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); extern void ata_sff_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); extern unsigned int ata_sff_data_xfer(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw); extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw); extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw); extern void ata_sff_irq_on(struct ata_port *ap); extern void ata_sff_irq_clear(struct ata_port *ap); extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, u8 status, int in_wq); extern void ata_sff_queue_work(struct work_struct *work); extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, unsigned long delay); extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); extern unsigned int ata_sff_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc); extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); extern void ata_sff_lost_interrupt(struct ata_port *ap); extern void ata_sff_freeze(struct ata_port *ap); extern void ata_sff_thaw(struct ata_port *ap); extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, u8 *r_err); extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, unsigned long deadline); extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, unsigned long deadline); extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, unsigned long deadline); extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); extern void ata_sff_error_handler(struct ata_port *ap); extern void ata_sff_std_ports(struct ata_ioports *ioaddr); #ifdef CONFIG_PCI extern int ata_pci_sff_init_host(struct ata_host *host); extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, const struct ata_port_info * const * ppi, struct ata_host **r_host); extern int ata_pci_sff_activate_host(struct ata_host *host, irq_handler_t irq_handler, struct scsi_host_template *sht); extern int ata_pci_sff_init_one(struct pci_dev *pdev, const struct ata_port_info * const * ppi, struct scsi_host_template *sht, void *host_priv, int hflags); #endif /* CONFIG_PCI */ #ifdef CONFIG_ATA_BMDMA extern const struct ata_port_operations ata_bmdma_port_ops; #define ATA_BMDMA_SHT(drv_name) \ ATA_BASE_SHT(drv_name), \ .sg_tablesize = LIBATA_MAX_PRD, \ .dma_boundary = ATA_DMA_BOUNDARY extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc); extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc); extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); extern void ata_bmdma_error_handler(struct ata_port *ap); extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); extern void ata_bmdma_irq_clear(struct ata_port *ap); extern void ata_bmdma_setup(struct ata_queued_cmd *qc); extern void ata_bmdma_start(struct ata_queued_cmd *qc); extern void ata_bmdma_stop(struct ata_queued_cmd *qc); extern u8 ata_bmdma_status(struct ata_port *ap); extern int ata_bmdma_port_start(struct ata_port *ap); extern int ata_bmdma_port_start32(struct ata_port *ap); #ifdef CONFIG_PCI extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); extern void ata_pci_bmdma_init(struct ata_host *host); extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, const struct ata_port_info * const * ppi, struct ata_host **r_host); extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, const struct ata_port_info * const * ppi, struct scsi_host_template *sht, void *host_priv, int hflags); #endif /* CONFIG_PCI */ #endif /* CONFIG_ATA_BMDMA */ /** * ata_sff_busy_wait - Wait for a port status register * @ap: Port to wait for. * @bits: bits that must be clear * @max: number of 10uS waits to perform * * Waits up to max*10 microseconds for the selected bits in the port's * status register to be cleared. * Returns final value of status register. * * LOCKING: * Inherited from caller. */ static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, unsigned int max) { u8 status; do { udelay(10); status = ap->ops->sff_check_status(ap); max--; } while (status != 0xff && (status & bits) && (max > 0)); return status; } /** * ata_wait_idle - Wait for a port to be idle. * @ap: Port to wait for. * * Waits up to 10ms for port's BUSY and DRQ signals to clear. * Returns final value of status register. * * LOCKING: * Inherited from caller. */ static inline u8 ata_wait_idle(struct ata_port *ap) { u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); #ifdef ATA_DEBUG if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", status); #endif return status; } #endif /* CONFIG_ATA_SFF */ #endif /* __LINUX_LIBATA_H__ */